解决jetty runner锁定js

在web.xml中添加

<servlet>
   <!-- Override init parameter to avoid nasty -->
   <!-- file locking issue on windows.         -->
   <servlet-name>default</servlet-name>
   <init-param>
      <param-name>useFileMappedBuffer</param-name>
      <param-value>false</param-value>
   </init-param>
</servlet>